Anyone have any experience flying with an external frame pack, namely, a Barney's Pinnacle pack? I'd preferably like to carry on or gate check my pack instead of checking it all the way mainly because of all the connecting flights (and the possibility of lost luggage) and all the straps. It won't be fully loaded because I've shipped my gear ahead. It'll just be a change of clothes and optics. Any suggestions or advice? Flying Continental.